Arthur imbery



A. IIVISERY,

ELECTRIC HIVET HEATER.

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A. IMBERY.

ELECTRIC RIVET HEATER.

APPLICATION FILED MAY 10, 1920.

1 ,363,8'77, Patented Dec. 28, 1920.

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UNITED STATES ARTHUR IMBERY, OF HALIFAX, YORK, ENGLAND.

ELECTRIC RIVET-HEATER.

Specification of Letters Patent.

Patented Dec. 28, 1920.

Application filed May 10, 1920. Serial No. 380,274.

To @ZZ whommay concern.'

Be it known that I, ARTHUR IMBERY, a subject of the King of Great Britain, residing at Halifax, in the county of York, England, have invented certain new and useful Improvements in Electric Rivet-Heaters, of which the following is a specification.

The subject of this invention is a rotary furnace primarily intended for heating rivets and the like and automatically discharging same but also adapted for cleaning rivets and the like either before or during the heating period as hereinafter described. The furnace may, if desired, be made in a portable or stationary form for use on board ship or in other places where such would be of advantage.

According to my invention, I employ a rotary chamber in the form of a cylinder or tube into which the rivets or the like to be heated can be fed one at a time with their small ends foremost, the rotation itself causing the rivets to travel forward through the chamber when they are placed in it with the small ends foremost and be discharged the outlet end, while such rotation also causes the rivets to be returned out of the feeding end if they are placed in the cylinder with the large ends lirst, the apparatus being thus fool-proof.

In the drawings, Figure l is a longitudinal section through a furnace constructed according to this invention. Fig. 2 is a side view, Fig. 3 is a plan view, and Fig. 4 is an end view, of the furnace. I

A indicates the cylindrical rotary chamber, B the resistance heating element and C heat insulating material.

In the example shown the chamber A is providedat each end with a disk or plate a which may be of refractory material and wound on the exterior of such chamber between the end plates is the resistance heating` element B. Encircling the latter is a filling of heat insulating material C, which is inclosed by a metal casing al that is supported by the two end plates a. This casing carries two channel shaped rings a? which act as guides for rollers a3 (Figs. 2 and 4l) on which the furnace body rests. The casing al is also encircled by a worm wheel a4 which gears with a worm a5 (Fig. 4L) driven from a motor a6. Situated at the feed end of the machine is a tube a7 (Fig. l) of refractory material formed with a flange ai near its outer end and encircling such flange is a boss a projecting from a plate that is secured to an angle ring al@ on the casing al. Mounted on the boss a is a ring Z) of insulating refractory material and iixed on such ring are two slip rings b1. The latter are inclosed in a cover b2 and are electrically connected with the winding B. Current is supplied to the latter through carbon brushes mounted on the slip rings b1.

The combination, with a. revoluble tubular heating` chamber provided with an electric heating device, of an inlet tube of refractory material arranged in line with the heating chamber and provided with a circumferentially projecting flange, a sleeve having its outer end portion supported on the said flange, a support of refractory material arranged between the inner end of the said sleeve and the heating chamber, and insulated contact devices carried by the said sleeve and arranged in circuit with the said heating device.

ln testimony whereof l aflix my sign t .re.

a ARTHUR TMBER Z.- 

